diff --git a/.github/workflows/python-testing-matrix.yml b/.github/workflows/python-testing-matrix.yml
index 7cc29df..354c24b 100644
--- a/.github/workflows/python-testing-matrix.yml
+++ b/.github/workflows/python-testing-matrix.yml
@@ -17,8 +17,8 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest] 
-        python-version: ["3.8", "3.9", "3.10"]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     steps:
     - uses: actions/checkout@v2
@@ -42,4 +42,4 @@ jobs:
         pip install -e ".[dev]" # --no-build-isolation
     - name: Test with pytest
       run: |
-        pytest datastock/tests -v -x
+        pytest datastock/tests -v -x
\ No newline at end of file
diff --git a/datastock/_class0.py b/datastock/_class0.py
index 69d3ea2..8cfc15e 100644
--- a/datastock/_class0.py
+++ b/datastock/_class0.py
@@ -168,7 +168,7 @@ def save(
         return_pfe=False,
     ):
 
-        lsep = ['.', '-', '_', ',', ';', '~', '?']
+        lsep = [';', '&', '?', '#', ',', '~', '.', '-', '_']
         if sep is None:
             for ss in lsep:
                 c0 = (
diff --git a/datastock/_class1_check.py b/datastock/_class1_check.py
index 0ca0435..946a5c0 100644
--- a/datastock/_class1_check.py
+++ b/datastock/_class1_check.py
@@ -147,7 +147,14 @@ def _check_conflicts(dd=None, dd0=None, dd_name=None, returnas=None):
                     or (
                         not isinstance(v0[kk], np.ndarray)
                         and not scpsp.issparse(v0[kk])
-                        and v0[kk] == dd0[k0][kk]
+                        and (
+                            v0[kk] == dd0[k0][kk]
+                            or (
+                                # asunit.Unit vs str should be the same
+                                kk == 'units'
+                                and str(v0[kk]) == str(dd0[k0][kk])
+                            )
+                        )
                     )
                 )
             )
@@ -1925,4 +1932,4 @@ def _select(dd=None, dd_name=None, log=None, returnas=None, **kwdargs):
                 [k0 for jj, k0 in enumerate(dd.keys()) if ind[jj]],
                 dtype=str,
             )
-    return ind
\ No newline at end of file
+    return ind
diff --git a/datastock/version.py b/datastock/version.py
index 6463202..0b42797 100644
--- a/datastock/version.py
+++ b/datastock/version.py
@@ -1,2 +1,2 @@
 # Do not edit, pipeline versioning governed by git tags!
-__version__ = '0.0.41'
+__version__ = '0.0.42'